Tool for compressing seals



(Numdam.) 2 sheets-sheet 1'.Y W. JOHNSON.

, TOOL FOR GOMPRESSING SEALS.

No. 278.434.. Patented. May 29, `1383.

N. PETERS. Phelo-Uihugnpher. wnfhingmrn D4 I;

(No Model.) -2 SheetsfSheet 2.

W. JOHNSON. TOOL FOR OOMPRESSING SEALS.

No. 278.434. Patented May 29,1883..

UNITED STATES PATENT a OFFICE.

. a wALTEnJoHNsom-'on Jackson, MICHIGAN.

Tool. FoacoMPREsslNG SEALS.

srEoirIcATroN forming part cenet/sers Patent No. 278,434, dated May e9, 188e.

To 'all whom it may concern.' y y Be it known .that I, WALrEa'JonNsoN, a citizen of the United States, residing at J aokson, in .the `county of Jackson `and State of ,Michigan, lhaveinveuted certain new and useful` Improvements in Toolsfor Compressing Seals, of which the following is a specification,

reference being ing drawings.

I This invention relates hadtherein to the accompanyto an improved de-` .vice for securing a sealto the wire passing compressing-tool.

y Figure lis a front view and a sectional view i `of Vaseal of the kind heretofore ordinarily em-` l modified form.

.1s to say, rectilineal 1n cross-section--and inV ployed; Fig. 2 shows similar 1ews of the improved seal'I have devised. y Fig. 3 is a side elevation of the device for impartingto the seal its peculiar shape and the impressions thereon. Fig. 4. is an elevation fromthe opposite side. Fig. 5 is an end view. Fig. 61's a longitudinalsection on the line .c m, Fig. 5. Fig. 7 is a perspective, on a larger scale, ot' the 'screw detached which'` carries 1 the die. Fig. 8 isa perspective of the sliding matrix, enlarged.` Fig. 9 is a side elevation, showing the positions of theparts when thesealis being inserted. Fig. 10 is a central section of .a

. `In the drawings, A represents a seal of the kind most frequently used, it being flat-that seals of-this sort the `.wires are situated on straight lines:`v When the seal is thus shaped and the wires are thus inserted, the withdrawal of the latter `frequently occurs accidentally and otherwise. I have obviated the difficulty thus arisingby shaping the seal as shown in Fig. 2-that is to say, forming it sothat it` shall be. angular or curved in cross-section. It is putinto this shape by means of thecompressing-tool to be hereinafterdescribed. The line` about which the curving or bending occnrs is transverse to the apertures through which thewires pass, so that the latter are bentalso, and, after being thus bent, it is Application tiled July 31, 1882. (No model.)

practically'impossible to withdraw them without breaking or marring the wires and the seal.

B represents one ot' the main parts of the compressing-tool, and() the other, these havling, respectively, handle portions B4 and C4. The part B is provided with aportion, B', having an external thread and an internal longitudinal aperture or passage, b'. The part 4C engages with it by means of the external screwthread, and the internal longitudinal aperture, b', extends through the part B to allow the passage of the die.

E represents the matrix. Itis formed `with or has attached to it a sliding arm, E. It is mounted inthe part B of the implement by means of an aperture, b, formed through it at right angles to the aperture b through the threaded sleeveB. The part B extends around to the outside ofthe matrix, as shown at B2, and is made thick enough to providea strong abutment on the outer side. Preferably the matrix is guided by meansot' one or `more projections, e, and grooves vformed in the wall of the aperture. The head portion E is wider Vthan theaperture b, so thatwhen said-head part strikes the surrounding arms B3 the matrix is stopped in proper position opposite tothe aperture b through the sleeve B. When the matrix is pushed upwardly or outwardly it is prevented from coming entirely out by means of a stop at E3.

E4 is a flat spring, which bears against the part B2 in such manner as to hold the matrix in proper position.

The matrix is concave, or provided witha depression or recess, F, 4the outline of which, in cross-section, conforms to that of the seals which are to be compressed, and at the bottom of this recess there is a depression, as Vshown atf. 1 y

ff are recesses in the rim ofthe matrix to receive the wires when a seal is in place `in the recess F. When the matrixis pushed intoits innermost position the` center ot' the recess F corresponds with the center of the longitudinal aperture b( through the threaded sleeve B; The die` is carried by or `formed upon the end of a bolt or circular barG. Atthe outer end it is provided with a left-hand thread, which engages with a' corresponding thread formed in an aperture, c, concentric with thethreaded part C. V`The threads upon the above-mentioned parts C and B are right-hand threads. The die proper consists of a projection, g', with a curved face corresponding to the recess j' in the matrix. l

The parts of the implement may be put together and adjusted as follows: The bolt or threaded bar G is first passed through the aperture e outwardly sufficiently far, and the part C is then caused to engage with'the part B'. The bolt G can then be adjusted properly relatively to the matrix from the outside, and is fastened in proper position by means of a pin or key, H, passing through a slot, h, in the part B', andengaging with an aperture, g2, in the bolt, the slot and aperture being so related that the die shall exactly correspond with the recesses in the matrix.

, After the parts have been properly joined the implement is used as follows in compressing the seal: The matrix is moved outward sufciently far to have the seal placed in the recess F, the wire lying in the reeessesf. The matrix is then pushed in to its innermost position, and the part C is rotated sufficient to force the die against the seal, the in ward movement ofthe die being caused by means of the right-hand threads onv thev parts B and C. The power thus made available by means of the screw is very great, and sufficient not only'to impart to the seal the impressions that are desired, but yalso to bend or.curve the seal across the wires, so as to putit into the shape shown in Fig. 2.`

By examining Figs. 6, 7, 8, and l() it will be seen that the recess or cavity F in the matrix is beveled or Haring aroundY its outer edge, and also that the end of the die is convex. By constructing the matrix and' diein this manner I insure that the seal, while being compressed, shall be held in proper position, and I obviate the difficulty heretofore largely experienced with the pressing-tool ordinarily in use-namely, the producingof an imperfect impression.

In Fig. 9 I have shown in full and dotted lines the positions of the parts just after a seal has been introduced into the. matrix, and by full lines the positionsof the partsjust before the matrix is pushed into place, carrying the seal with it. It will be seen that there is an ear or projection, 13,7carried by the part C, with which the operators thumb can engage to rock said part C more or less, as may be necessary, to permit the movements of the matrix.

Although I have above described-that form of tool which I prefer to employ, yet it will be readily seen that my improved matrix and die can be combined with tools of thecommon sort,

or implements of any proper character adapted to this use. Thus in Fig. 10 I have shown a tool of another character, iu which the arms B and G are pivoted together, one carrying the matrix and the other the die. The matrix,

so far as the guiding andnbending-.cavity is concerned, and the die, so-far as the operative face or `end thereof is concerned, are the same as those shown in the construction above described. Under some circumstances a tool of the character shown in said Fig. 10 will be preferable. The compression can be caused by means of a hammer or other implement for imparting a blow to the en-d of the die.

J represents a leather back piece secured to the under or rear side of the matrix to act as a cushion for it when the, blow is being imparted to the die.

It' desired, a spring, vK, may be employed to return the arms'B and C to their. open'position. t

Therefore I do not wish to be limited to the -exact form of tool so far as thispart of myinvention is concerned-to' wit, the cavity orrecess formed in the matrix, and the die having a corresponding conformation. The tool shown in Figs. 3, 4, 5, 6,7, 8, and 9, however, has many advantages, and I therefore prefer that form'. It will be seen that I provide such a support or holder for the seal while it is being compressed that it shall be more or less inclosed on all sides to prevent its escaping from the recess or cavity in which it is seated. This is effected iu the construction shown by having a part of the end of the die-support lie over the face of the seal after the matrix has been put into position, vfor it will be seen that the aperture through which the die moves is somewhat less in diameter ythan -th'e widest part of the cavity or recess, and therefore the metal immediately around the die-aperture will tend to bear against the edges of the seal and prevent it from slipping laterally. ySome of the advantages, however, of. this part of the tool can be attained if the aperture through which the die moves is as large as the widest part of the cavity in the matrix, for the end of the die inthat case will operate advantageously to prevent any moving of the seal. But in either case, after the matrix has been moved back into position, the seal will be surrounded, so far as its edges and the f'aee opposite to the die are concerned. Therefore no eccentric impressions canbe produced, and such impressions are frequently produced with the tools ordinarily in use, owing to-the fact that the seal is not entirely surrounded by retaining-walls, as in my construction.

I do not in this case claim thebent or curved matter ofanother application.

What I claim is-V 1. .The combination, with the reciprocatingv die, of the part B, provided with an aperture 'for the passage of the die, and with an abutment, B2, and the matrix arranged to slide be- 'tween said abutment and the part having the :aperture for the die, substantially as set-forth.

2. The combination, with the reciprocating IIC r-'aasaa y s i l die, of the? part B, provided withfanaperture `for the passage of ,thefdie, and witha way transverse to said aperture, and the sliding matrix situated in said way, and adapted to be moved outward to receivethe seal, and to be moved inward to bring the recess in `the matrix opposite tothe die, substantially as set forth.

3. The combination, with thereciprocating die, and-the part B, providedwith a passage for said die, and with a Waytransverse to said passage, of the sliding matrix provided with stops to limit its outward and inward movements, the matrix, when in position, being surrounded by walls which prevent the escape of the seal, substantially `as set forth.

4. The combination of the part B, provided with an external screw thread, the sliding matrix mounted in and adapted `to be moved laterally relatively to said part B at every operation, and the part C, carrying the recipro. catingdie, and provided with an internal screwthread for engagingI with the thread on the part B, substantially as set forth.

5. The combination, with the partV C and the die united` thereto by a screw-thread,of the part B, which carries the matrix, and is provided with a screw-thread for engaging with the part C, said screw-thread being oppo site in pitch to the thread Whichjengages the die with said part C, substantially as set forth.`

6. The combination, with the part B, carrying the matrix, and provided with a slot, h, of

the part U, thefdie adapted to Vrotate in said `p`art0,fan d `the pin H, substantially as set forth.

pression, whereby the seal is upon all sides heldby retaining devices.

8. In afportable tool for compressing seals, the combination of a sliding matrix having a compressed, a die which bears against one of the faces of the seal, and a die-support, which,

when the matrix is moved into position for compression, partially covers the face of the seal, whereby it assists in holding it in position, substantially as set forth.`

9. A portable tool for compressing seals, having a matrix and die, the one being pro-` vided With a recess the bottomof which is' curved or concave in cross-section, and the other being provided with aconvex projection corresponding to saidrecess and adapted to bend the seal, substantially as set forth.

` 1n testimony whereof I affix my signature in presence of two witnesses. WALTER JOHNSON. Witnesses:

GHAs. G. REED, J. H. DEs RoscERs.

.recess or cavity to hold the seal while being l 

